How to Random Extrude in Cinema 4D

Understanding Random Extrude Functionality

Random extrusion in Cinema 4D allows designers to create unique and dynamic three-dimensional models by varying the extrusion depth based on parameter randomness. This technique can add a level of complexity and intrigue to models, making them stand out in creative projects. Here’s a detailed guide on how to implement random extrusion in Cinema 4D.

Setting Up Your Initial Shape

1. Open Cinema 4D: Launch the application to begin your project.

2. Create a Base Object:

   • Navigate to the Create menu and select a primitive shape. A simple polygon, like a cube or plane, can be effective for this technique.
   • Adjust the size and segments of your shape according to your project requirements. More segments provide more points to manipulate during extrusion.
3. Convert to Editable Object:
   • Select your primitive shape and press the ‘C’ key or go to Character > Current State to Object. This converts the shape into an editable polygon mesh.

Utilizing the Random Effector

1. Add a Random Effector:

   • With the base object selected, go to the MoGraph menu and select Effector > Random. This will introduce a new Random Effector in your object hierarchy.
   • In the Object Manager, ensure the Random Effector is a child of the base object.

2. Adjust Random Effector Settings:

   • Select the Random Effector and navigate to the Attribute Manager. Here, you will find options to alter the settings.
   • Focus on the “Parameter” section. Ensure that “Position,” “Scale,” or any other applicable parameters are enabled based on what you wish to manipulate.
3. Modify Random Seed:
   • Change the random seed value in the Random Effector to see different variations. This seed controls the randomness of your extrusion, resulting in diverse outcomes with each adjustment.

Applying the Extrude Tag

1. Insert an Extrude Object:

   • With your base polygon still selected, navigate to the menu and select MoGraph > Extrude. This will allow you to create extrusions based on your shape’s points.

2. Connect the Extruder with the Random Effector:

   • Select the Extrude object and go to the Attribute Manager. You will see a setting for ‘Effector.’ Drag your Random Effector into this field to apply its influence.
3. Adjust Extrude Settings:
   • Set the ‘Movement’ parameter in the Extrude object to control how far the edges of your shape are pushed outward. Adjust this value while observing the visual changes in the viewport.
   • Play around with the ‘Offset’ to control how much random extrusion occurs. Fine-tune the extrusion depth to achieve the desired visual effect.

Finishing Touches

1. Refine the Appearance:

   • Go to the Material Manager and create new materials to add texture and color to your extruded shape.
   • Assign these materials to the object to enhance its visual appeal.

2. Animate for More Drama (optional):

   • If desired, animate the random effector’s parameters over time to create dynamic transformations, adding another layer of interest to your model.
3. Render Your Scene:
   • Finally, set up your camera and lighting to enhance the display of your random extrusion. Render your scene to see the final product.

Frequently Asked Questions

What types of objects can I use for random extrusion in Cinema 4D?
You can use any editable polygon object, such as planes, cubes, or more complex shapes. The key is that it should have sufficient segments for effective manipulation.

Can I combine multiple effectors for more complex designs?
Yes, multiple effectors can be combined to create intricate designs. Just make sure to manage their hierarchy and influence on the base object correctly.

Is it possible to animate the random extrusions?
Absolutely, you can animate parameters of the Random Effector or the Extrude object to create lively transitions and changes over time within your model, enhancing its visual dynamics.